Gear-shift for cross-actuators



bevel gear 9.

LEE S. ANDERSON, OF DETROIT, MICHIGAN.

DEVICE FOR TURNING SHEET-MUSIC.

Specification of Letters Patent.

Patented Jan. 27, 1920.

Application filed September 15, 1919. Serial No. 323,690.

To all whom it may concern:

Be it known that I, LEE S. ANDERSON, a citizen of the Dominion of Canada, subject of the King of Great Britaimresiding at Detroit, county of "Wayne, State ofMichigan, have invented a certain new and useful Improvement in Devices for Turning Sheet- Music, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a device for turning sheet music. It is particularly designed for use in connection with a piano or organ, or other musical instrument having. an upright music stand. The device is operated by foot from a pedal and is designed to allow the musician to be free at all times. The device as here shown is illustrated in conjunction with the music rack of a piano or organ. It is understood, however, that the device is not claimed merely for use in conjunction with such instrument.

In the drawings,'

Figure 1, is av front elevation of the music rack showing the device attached thereto.

. Fig. 2 is a rear elevation of the music rack showing the device attached thereto.

Fig. 3 is a cross-section partly broken away, taken on line IIIIII of Fig. 1.

Fig. 1 is an enlarged elevation of guide plate shown in Fig. 1.

Fig. 5 is a cross-section taken on the line VV of Fig. 3.

The music rack 2 is recessed longitudinally, as shown at 3. This recess is formed so as to provide a path or way for the longitudinal movement of guide plate 1, the outer surface of such guide plate being flush with the. surface of the music rack, The guide plate is heldinplace by'ni'eansiofi a strip or clip 3. Aifixed to the rear ofthe guide plate: is, a rackextending longitudinally thereof at approximately the central portion. designated as 4.. This rack is designed to. mesh with a pinion .5 carried. at the upper end of the shaft 6,. saidishaft disposed in bearings 7,7. The lower end of thisshaft is provided with a bevel.

meshes at right angles with the gear 8 which 7 Bevel gear 9' has at the opposite end the shaft 10, upon which it is mounted, a foot pedal 11. This foot pedal 11 is so disposed as to be easily operated by the musician. This particular arrangement of bevel gears and shafts might be varied to meet particular designs of instrument with which the attachment is used. It will be seen that the operation of the foot pedal 11 serves to permit motion from the shafts and gears heretofore described to guide plate 1 as the pinion 5 meshes with the rack 4 carried by said guide plate; therefore the operation of the foot pedal a predetermined distance will move the guide plate a predetermined distance within the recess 3 of the music rack. The face of said. guide plate 1 is provided with a series of racks extending longitudinally thereof in successive parallel planes designated in Fig. 4, as 12, 13 and 14-. Alternating with these racks and of slightly greater altitude, the ends of which somewhat overlap the ends of the racks, are guide rods 15, 16, and 17 for purposes hereafter described.

There is provided on the front of the music rack brackets 18 and 18 carrying shaft 19 upon which shaft are freely nounted pinions 20, 21, and 22. These pinions are held in spaced relationship one from the other by means of bushing or pinion hubs and are designed to mesh with racks 12, 13 and 14: respectively. It will be observed that the music rail is cut away in the rear of such pinions, as at 23, so as to permit the engagement of the pinions with the racks carried by the guide plate. Affixed radially to pinions 20, 21, and 22 are arms 24, 25 and 26. These arms are offset at their outer extremities so that the extremities will lie in substantially the same horizontal plane and will overhang the sheet music carried on the-rail of the rack. These arms are likewisev of varying lengths so there will be: no conflict in the individual movement thereof. The outer extremities of these radially-extending arms are provided with clips 24?, 25 and. 26 adapted to grip the sheets of mus c intended to be operated by this device. It 1s. apparent that the number of pinions and therefore the number of radially-extendin arms may be increased, if so desired. arried by pinions 2Q, 21,

and 22 are stops 27,; 28 and 29' which are adapted to be engaged by the guide 'rods 15,

A. F. POOLE.

GEAR SHIFT FOR CROSS ACTUATORS.

APPLICATION FILED JULY 8, 1918.

1,329,014. Patented Jan. 2?, 1920.

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICE.

ARTHUR E IOOLE, OF KENILWORTH, ILLINOIS, ASSIGNOR TO THE WAHL COMPANY, OF

WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

GEAR-SHIFT FOB- OROSS-ACTUATORS.

Specification :of Letters Patent Application filed Ju1y'8',-I918. Serial No. 243,995.

lating machines and is shown particularly applied to the Wahl 'crossfooting machine now in wide commercial use and illustrated in'the patent to me, No. 1,198,050, September 12, 1916, and also in my copending ap-' plication Ser. No. 709,010, filed July 12, 1912.

My present invention is an improvement in the gear shift device shown in my cited copending application and has for its object the making of said gear shift device simpler in order to accommodate itself to a certain class of calculations for which all the functions present in the gear shift device shown in my cited application are not required. More specifically in said cited application are shown a vertical actuator and a cross actuator. The vertical actuator may be thrown in any one of three conditions, viz., addition, subtraction, or disconnect. The cross actuator may similarly occupy any one of three positions, viz., addition, subtraction or disconnect. The cross actuator may be controlled in two distinct ways, first by an automatic control actuated by certain cams mounted on the typewriter carriage, and second by a manual control actuated by a certain lever associated with the cross actuator. Either the manual or the automatic control may place the cross actuator in any of its three conditions and in addition there is provided a shift lever for the purpose of determining whether the cross actuator should be under manual or automatic control.

It frequently happens that a crossfooting.

machine is sold to be used steadily on a predetermined program of work, which program is set up on the cams of the typewriter carriage. The manual control therefore becomes superfluous and it is one of the objects of my present invention to so modify and change the gear shift mechanism shown in my cited application that this manual control will be absent from the machine and its place be taken in part by the truck 20.

lever formerly used to shift from automatic to manual control.

My invention will be best understood by reference to the following fi res, of which Figure 1 is a front elevation of a Wahl crossfooting machine equipped with my improved gear shift;

F igs. 2 and 3 are perspective views of my improved gear shift, and

Fig. 4 is a top viewof a part of the mechanism.

Similar reference numerals refer to like parts in all the figures.

The Wahl crossfooting' machine is mounted on a Remington typewriter 10, which is provided with digit keys 11, tabulating keys 12 and alphabetical keys (not shown). A pull rod 13 extends from each of the digit keys 11 to the vertical'actuator 14, which.

contains the customary Wahl mechanism, having for its object the translation of the vertical motion of the pull rod 13 into a differential rotation of a vertical master wheel 15 in a direction determinedby the position of the vertical gear shift rod 16. By con nections thoroughly described in my issued Patent No. 1,198,050, September 12, 1916, the vertical actuator 14 is connected to a cross actuator 17 which is provided with the cross master wheel 18, which upon motion of any of the digit keys 11, revolves a differential amount, determined by the position of the cross gear shift rod 19. The precise mechanism by which the reciprocating motion of the digit keys 11 is transformed into differ- Patented Jan. 27, 1920.

tial rotation of the master wheels 15 and 18, v

as determined by the position of the gear shift rods 16 and 19. A traveling truck 20 is mounted-on the framework 10 of the typewriter and serves to support the vertical totalizers 21, 22 and 23, which are held in their position by suitable latches 24, which engage the teeth of a rack 25 rigid with the The truck 20' is slidably mounted i the truck 20.

step, the totalizers 21, 22 and 23 are moved in the framework of the machine and is attached to the carriage (not shown) of the typewriter by brackets 26 and 27, which. serve to communicate-the step-by-step motion to the left of the typewriter carriage to As the truck 20 moves step by actuator 14 is the cross casting 28, which is provided with suitable ways, in which reeiprocates the cross truck 29, normally held to the right by a spring 30 extending over a roller 31 in said casting. The cross truck 29 serves as a support for the cross totalizer 32 and is also provided with a pick-up beam 33, Which is adapted to be picked up successively by the vertical totalizers 21, 22 and 23, and thus move the cross truck 29 in synchronism with the master wheel 20 during the time the several vertical totalizers are in engagement with the vertical master wheel 15. Numbers may thus be inserted simultaneously into any of the vertical totalizers 21, 22 and 23 and the cross totalizer 32.

As before noted, the direction of rotation of the vertical master wheel 15 is determined by the position of the vertical gear shift rod 16, said rod having three positions, corresponding to an addition, subtraction and I disconnect position respectively. The mechanism connected with the gear shift rod 16 is described in my copending application Serial No. 7 09,010, and need not further be described in'this place. The direction of rotation of the cross master wheel 18 is determined by the position of the cross gear shift rod 19, which is slidably mounted in the framework and is controlled by a lever 34 pivoted in the framework on a stud 35. The upper end of the lever 34 is provided with a stud screw 36, pivoted to which is a link 37, which is pivoted to the crank arm 38, mounted on a shaft 39, rotatably mounted in the framework of the machine. The rear end of the shaft 39 is provided with a crank arm 40, having a pin 41 therein, which is engaged by a V-shaped slot 42 in a floatmg cam plate 43. The floating cam plate 43 may be moved from either of two points:

First, from a pin 44, which is constrained to move in a horizontal line by a plate (not shown), and second, from a pin 45 in the upper end of the cam plate 43. The pin 45 is controlled from either of two sources:

- First, by the plates 46, which are pivoted to the upper end of a lever 47 rigid to a shaft 48 rotatably mounted in the framedepressed by cams 51 and 52, mounted on the vertical totalizers 22 and By providing cams 51 and 52 of various heights, it is possible to predetermine any of the three possible positions of the cross gear shift rods 19. It will be noticed that the vertical totalizer 21 is not provided with any cam and when said totalizer is in engagement with the vertical master wheel 15 the position of thegear shift rod 19 is determined by the tension spring 53, extending from a stud 54 in the framework to the lever 47. The lever 47 is provided with an arm 55, which is adapted to contact with a pin 56 mounted in a lever 57, rotatably mounted on a stud 58 in the framework.

When the spring 53 brings the lever 47 into a position determined by the contact of the arm 55 withthe stud 56, the cross gear shift rod 19 is in its position determining addition for the cross master wheel 18. When the roller 50 is depressed-by one of the cams 51 or 52, it may be either depressed. all of the way, thereby determining the subtraction position of the gear shift rod 19, or it may be depressed only a part of the way, thereby determining a disconnect position of the gear shift rod 19.

From the preceding it will be apparent how the first method of controlling the pin 45 in the floating cam'plate 43 is operated, that is, how the position of the roller 50 may determine any one of the three positions of the cross gear shift rod 19. e

I shall now describe the second means of determining the position of the pin 45 in the cam plate 43. Referring to Figs. 1, 2 and 3, it will be observed that the machine is provided with a shift handle 60, pivoted at a stud 59 on the frame work and provided with a link 61, which serves to connect the handle 60 with the lever 57 previously referred to. The lever 57 is provided with a pin 62, which engages a slot 63 in a rocker 64, pivoted on a stud 65 in the framework of the machine and provided with a pin 66 engaging a slot 67 in the plate 46. When the parts are in the position shown in Fig. 2 that is, when the machine is under automatic control, the pin 66, by reason of its engagement with the slot 67, serves to maintain the plate 46 in contact with the pin 45, thus determining that the "cross gear shift rod .19 shall be under the automatic control of the roller 50. When, however, the handle 60 is shifted to the position shown in Fig. 2, it will be observed that the plate 46 is with drawn from its contact with the pin 45, and that the position of said pin is determined by its engagement with a notch 68 in the upper part of the rocker 64. a

The position of the notch 68 is such that the pin 45 is always thrown into position determining the disconnect position of the gear shift rod 19, so that the lever 60 is in efiect a disconnect lever for the cross actuiee ator, thereby enabling said actuator to be thrown into a disconnect position Without affecting the setting of the vertical actuator.

It is, of course, obvious that this throwing of the cross actuator into the disconnect osition is not necessary, but that the hand e 60 may throw the cross actuator into either subtraction or addition, since this obviously depends on the location of the notch 68. However, as will be hereinafter explained, I prefer to throw the cross actuator into a disconnect position when the lever is operated.

In order to correct errors on my improved machine it is desirable to reinsert a number in the opposite direction from that in which an erroneous number was inserted, thereby canceling the erroneous insertion. From the preceding it is obvious that the vertical actuator may be in an one of three possible positions, that is, a dition, disconnect ,or subtraction, and that the cross actuator may similarly be in any of three possible conditions, v1z., addition, disconnect or subtraction. It therefore becomes highly desirable to have a single lever which, when actuated, will throw both the cross and vertical actu' ators into the reverse of their former condition. In my improved machine I have provided a lever of this kind at 69. 'Said lever is rotatably mounted on a stud in the framework and is connected by a link 71 to a bell crank lever 72, rotatably mounted on a stud 73 rigid in the framework. A pair of links 74 and 75 serves to connect the bell crank 72 with a pin 76 in the vertical cam plate 77 and the pin 14: in the floating cam plate 43for the cross actuator. The motion of the handle 69 is such that it will move the pins 76 and 14: through half the angle subtended from the pin &5 bythe slot 42. This slot is so shaped that moving the cam plate 43 through half of this angle will throw the pin 41 into the reverse of its former condition. That is, if said pin stood in a position corresponding to the addition position of the gear shift rod 19, said pin will be moved to a position determinmg a subtraction position of the gear shift rod 19, and vice versa. Since the disconnect position is intermediate between the addition and subtraction positions, the reverse cal or horizontal actuator is in its discon- 1. In acalculatmg machine, the. combination of a totalizer, an actuator adapted to insert numerals therein seriatim, an automatic control for said actuator and a manualco-ntrol for said actuator, said manual control being adaptedto disconnect said actuator from said automatic control and bring *said actuator into a predetermined condition. I r v 2. In a calculatin machine, the combination of a gear shil t, atraveling member, meansactuated by said traveling member for controlling said ar shift, and a second means of control ing said gear shift to bring said gear shift to a determined position.

3. In a calculating machine, the combination of a gear shift, an automatic control for said gear shift, and means for render ing said automatic control \inefi'eotive on said gear shift and simultaneously bringing said gear shift to a predetermined position.

4. In a calculating machine, the combination of a gear shift determining the direction in which numbers are entered in said machine, a floating lever whose position determines the position of said gear shift, a traveling member, means operated by said traveling member to control said floating lever, and manual means to disconnect said automatic control. from said floating lever and bring one part of said floating lever to a predetermined position. I

5. In a calculating machine, the'combination of a gear shift determining the direction in which numbers are entered in said machine, a floating lever whose position determines the position of said gear shift, a traveling member, means operated by said traveling member to control said floating lever, manual means to disconnect said automatic control from said floating lever and bring one part of said floating lever to a predetermined position, and means to control the position of a second point in said floating lever.

In witness whereof I have hereunto subscribed my name.

ARTHUR F. POOLE. 

